Calclavia Core 1.6.4 is a required library used in Calclavia’s mods. It will need to be installed in the mods directory in Minecraft just like any other mod. The library adds in code that are used in Calclavia’s mods but does not add any actual features into the game except basic crafting recipe items and ore generation (if the ore is not already generating).
Calclavia Core 1.6.4 Download Links
For Minecraft 1.6.4
Quick facts
- Edition: Minecraft Java
- File type: .jar
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: In MC Java Mods, or directly above on this page.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Downloads as 210649.mcaddon
- Download size: 280 KB
- Download link checked 24 Jul 2026 — working
- Mirrored on our own servers — the download does not depend on the original host
These come from our own check of the pack file, not from the source page.